<template>
  <el-menu
    :default-active="activeMenu"
    mode="horizontal"
    @select="handleSelect"
    :ellipsis="false"
  >
    <template v-for="(item, index) in topMenus">
      <el-menu-item
        :index="item.path"
        :key="index"
        v-if="index < visibleNumber"
      >
        <svg-icon :icon-class="item.meta.icon" />
        {{ item.meta.title }}</el-menu-item
      >
    </template>

    <!-- 顶部菜单超出数量折叠 -->
    <el-sub-menu
      class="last"
      index="more"
      v-if="topMenus.length > visibleNumber"
    >
      <template #title>···更多</template>
      <template v-for="(item, index) in topMenus">
        <el-menu-item
          :index="item.path"
          :key="index"
          v-if="index >= visibleNumber"
          ><svg-icon :icon-class="item.meta.icon" />
          {{ item.meta.title }}</el-menu-item
        >
      </template>
    </el-sub-menu>
  </el-menu>
</template>
<script setup>
import { constantRoutes } from '@/router'
import { isHttp } from '@/utils/validate'
import useAppStore from '@/store/modules/app'
import useSettingsStore from '@/store/modules/settings'
import usePermissionStore from '@/store/modules/permission'
import { computed, onBeforeUnmount, onMounted, ref } from 'vue'
import { useRoute, useRouter } from 'vue-router'

// 顶部栏初始数
const visibleNumber = ref(null)
// 当前激活菜单的 index
const currentIndex = ref(null)
// 隐藏侧边栏路由
const hideList = ['/index', '/user/profile']

const appStore = useAppStore()
const settingsStore = useSettingsStore()
const permissionStore = usePermissionStore()
const route = useRoute()
const router = useRouter()

// 主题颜色
const theme = computed(() => settingsStore.theme)
// 所有的路由信息
const routers = computed(() => permissionStore.topbarRouters)
//设置主题颜色
// function setActives(val, item) {
//   return {
//     'background-color':
//       val == item.path
//         ? theme.value && theme.value != '#1890ff'
//           ? theme.value + ' !important'
//           : 'rgb(38 89 153)  !important'
//         : ''
//   }
// }
// 顶部显示菜单
const topMenus = computed(() => {
  let topMenus = []
  routers.value.map(menu => {
    if (menu.hidden !== true) {
      // 兼容顶部栏一级菜单内部跳转
      if (menu.path === '/') {
        topMenus.push(menu.children[0])
      } else {
        topMenus.push(menu)
      }
    }
  })
  return topMenus
})
// 设置子路由
const childrenMenus = computed(() => {
  let childrenMenus = []
  routers.value.map(router => {
    for (let item in router.children) {
      if (router.children[item].parentPath === undefined) {
        if (router.path === '/') {
          router.children[item].path = '/' + router.children[item].path
        } else {
          if (!isHttp(router.children[item].path)) {
            router.children[item].path =
              router.path + '/' + router.children[item].path
          }
        }
        router.children[item].parentPath = router.path
      }
      childrenMenus.push(router.children[item])
    }
  })
  return constantRoutes.concat(childrenMenus)
})

// 默认激活的菜单
const activeMenu = computed(() => {
  const path = route.path
  let activePath = path
  if (
    path !== undefined &&
    path.lastIndexOf('/') > 0 &&
    hideList.indexOf(path) === -1
  ) {
    const tmpPath = path.substring(1, path.length)
    activePath = '/' + tmpPath.substring(0, tmpPath.indexOf('/'))
    if (!route.meta.link) {
      appStore.toggleSideBarHide(false)
    }
  } else if (!route.children) {
    activePath = path
    appStore.toggleSideBarHide(true)
  }
  if (activePath == '/index') {
    activePath = '/shortcutMenu'
    appStore.toggleSideBarHide(false)
  }
  activeRoutes(activePath)
  console.log(activePath, 'activePath----')
  return activePath
})

function setVisibleNumber() {
  const width =
    document.body.getBoundingClientRect().width - 200 - 163 - 123 - 50 - 50
  visibleNumber.value = parseInt(width / 103) > 11 ? 11 : parseInt(width / 103)
}

function handleSelect(key, keyPath) {
  appStore.changeSetting(false) //默认不折叠菜单
  currentIndex.value = key
  const route = routers.value.find(item => item.path === key)
  if (isHttp(key)) {
    // http(s):// 路径新窗口打开
    window.open(key, '_blank')
  } else if (!route || !route.children) {
    // 没有子路由路径内部打开
    router.push({ path: key })
    appStore.toggleSideBarHide(true)
  } else {
    // 显示左侧联动菜单
    activeRoutes(key)
    appStore.toggleSideBarHide(false)
  }
}

function activeRoutes(key) {
  let routes = []
  if (childrenMenus.value && childrenMenus.value.length > 0) {
    childrenMenus.value.map(item => {
      if (key == item.parentPath || (key == 'index' && '' == item.path)) {
        routes.push(item)
      }
    })
  }
  if (routes.length > 0) {
    permissionStore.setSidebarRouters(routes)
  } else {
    appStore.toggleSideBarHide(true)
  }
  return routes
}

onMounted(() => {
  window.addEventListener('resize', setVisibleNumber)
})
onBeforeUnmount(() => {
  window.removeEventListener('resize', setVisibleNumber)
})

onMounted(() => {
  setVisibleNumber()
})
</script>

<style lang="scss">
.topmenu-container.el-menu--horizontal {
  background-color: #3871b8;
  border-bottom: none;
  & > .el-menu-item,
  & > .el-sub-menu .el-sub-menu__title,
  & > .el-sub-menu.is-opened {
    color: #fff !important;
    background-color: #3871b8;
    border: 1px solid transparent;
    @apply float-left rounded-20px;
    .svg-icon {
      @apply mr-3px;
    }
  }
  & > .el-menu-item {
    @apply mx-6px my-10px px-14px h-35px;
  }
  & > .el-sub-menu.is-opened {
    padding-left: 0 !important;
    margin-left: 0 !important;
  }
  & > .el-sub-menu .el-sub-menu__title {
    letter-spacing: 3px;
  }
  & > .el-menu-item.is-active,
  & > .el-menu-item:hover,
  & > .el-sub-menu .el-sub-menu__title:hover,
  & > .el-sub-menu.is-active .el-submenu__title {
    color: #fff !important;
    background-color: rgb(38 89 153) !important;
    border: 1px solid #cccccc78;
  }
  & > .el-sub-menu.last .el-sub-menu__title:hover {
    background-color: transparent !important;
    @apply border-none;
  }
  & > .el-sub-menu .el-sub-menu__title .el-sub-menu__icon-arrow {
    @apply hidden;
  }
  & > .el-sub-menu.is-active.last .el-sub-menu__title {
    border-bottom: none !important;
    color: #fff !important;
  }
  // 更多的样式清除
  & > .el-sub-menu.last.is-opened .el-sub-menu__title:hover,
  & > .el-sub-menu.last .el-sub-menu__title:hover,
  & > .el-menu-item.last:hover,
  & > .el-sub-menu.last.is-opened,
  & > .el-menu-item.last,
  & > .el-sub-menu.last .el-sub-menu__title {
    border: none !important;
  }
}
</style>
